Water Quality Report · Updated October 07, 2026
MARIETTA BOARD OF LIGHTS AND WATER
MARIETTA BOARD OF LIGHTS AND WATER delivers tap water graded B (76/100) by TapWaterSafety.org. The utility serves approximately 60,100 residents in MARIETTA, Georgia using surface water (purchased). The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline. For questions, the utility can be reached at 770-794-5502.
Is MARIETTA tap water safe to drink?
MARIETTA BOARD OF LIGHTS AND WATER delivers tap water that earns a grade of B (76/100) from TapWaterSafety.org — a good rating, with only minor concerns relative to health-based guidelines.
The utility serves 60,100 residents in MARIETTA, drawing from surface water (purchased).
Public testing data identifies 11 contaminants in this water above EWG's health-based guidelines, including: Haloacetic acids (HAA9), Total trihalomethanes (TTHMs), Haloacetic acids (HAA5), Bromodichloromethane, Chloroform, Trichloroacetic acid, Dichloroacetic acid, Dibromochloromethane, Chromium (hexavalent), Dibromoacetic acid, Chlorate. For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
EPA compliance record
Official U.S. EPA records for MARIETTA BOARD OF LIGHTS AND WATER (system ID GA0670005) for the last 3 years. Checked 2026-10-07.
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Quick actions for MARIETTA residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for MARIETTA BOARD OF LIGHTS AND WATER.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 33.3 ppb, 555x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 51.9 ppb, 346x above the EWG health guideline of 0.15 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 23.3 ppb, 233x above the EWG health guideline of 0.1 ppb.
Contact MARIETTA BOARD OF LIGHTS AND WATER
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Recommended water filters for MARIETTA
Filters matched to the specific contaminants in this water supply.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
Score breakdown
This utility's overall score of 76/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
33.3 ppb | 0.06 | — | — | — | — | — | 555× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
51.9 ppb | 0.15 | 80.0 | 100 | — | — | — | 346× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
23.3 ppb | 0.1 | 60.0 | 60 | — | — | — | 233× over |
| Bromodichloromethane Disinfection byproduct |
7.24 ppb | 0.06 | — | — | — | — | — | 121× over |
| Chloroform Disinfection byproduct |
41.1 ppb | 0.4 | — | — | — | — | — | 103× over |
| Trichloroacetic acid Disinfection byproduct |
9.88 ppb | 0.1 | — | — | — | — | — | 99× over |
| Dichloroacetic acid Disinfection byproduct |
13.3 ppb | 0.2 | — | — | — | — | — | 66× over |
| Dibromochloromethane Disinfection byproduct |
3.58 ppb | 0.1 | — | — | — | — | — | 36× over |
| Chromium (hexavalent) Heavy metal |
0.0686 ppb | 0.02 | — | — | — | — | — | 3.4× over |
| Dibromoacetic acid Disinfection byproduct |
0.0575 ppb | 0.03 | — | — | — | — | — | 1.9× over |
| Chlorate Disinfection byproduct |
283.5 ppb | 210.0 | — | — | — | — | — | 1.4× over |
| Manganese Heavy metal |
1.28 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.0655 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.0138 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0344 ppb | 1500.0 | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
MARIETTA BOARD OF LIGHTS AND WATER service area
This water system serves 1 community in Cobb County, Georgia. Click any city for its dedicated tap water quality page.
Find the right filter for MARIETTA water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.